CristalACTiV™ Photocatalytic TiO₂: The science behind self-cleaning surfaces

Have you ever wished you could go longer between window and wall cleanings? How about easier cleaning with one quick sponge stroke? Titanium dioxide (TiO₂), as a semiconductor, offers a smart technology solution through its photocatalytic properties. Surfaces treated with specifically designed TiO₂ will see the time between cleaning cycles extended, likewise leading to cost savings in maintenance. Today, high-tech buildings of all sizes around the world are making use of this functionality.

No magic, but a well-known chemical reaction – it all happens at the catalytic TiO₂ surface thanks to UV light, oxygen and humidity. The level of UV light present in normal daylight is sufficient to activate the so-called photocatalytic reaction. Under irradiation, the TiO₂ surface sites react with adsorbed atmospheric water, generating reactive hydroxyl radicals, which will oxidize organics such as dirt and grime, leading to their mineralization. The surface then becomes “self-cleaning”. On glass, the self-cleaning effect is boosted by the super-hydrophilic effect, avoiding the formation of droplets and consequently eases the washing away of the degraded dirt.

Tronox has a full range of photoactive TiO₂ products that have demonstrated self-cleaning performance in real-life conditions. From dry powders to stable colloidal suspensions, Tronox offers the best-in-class commercial range of photocatalytic TiO₂. Our photocatalytic TiO₂ can either be introduced as an active component in formulations or used in direct applications. Tronox’s Specialty plant in Thann, France, with more than 30-years of experience in manufacturing Ultrafine and Specialty TiO₂, produces our photocatalytic TiO₂ with the highest standards of quality and consistency. With a dedicated sales force spread all over the world, CristalACTiV™ TiO₂ products serve a broad portfolio of industries and are used by academics around the globe.

For more information about CristalACTiV™ Photocatalytic TiO₂, visit: https://www.cristalactiv.com/ or https://www.tronox.com/products/ultrafine-and-specialty-titanium-dioxide/.